More:

Alex Corner (English blues player)

John Hammond Jr. (although he gets around)

John Cohen (w. Mike Seeger and the N.L.C.R)

Blind Blake from the Bahamas

Manse Lipscomb (traditional blues picker)

Roger Sprung (influential bluegrass banjo player in New York)

Tim Holt (LA area)

Tim Buckley (same)

Almeda Riddle (not too known Appalachian singer traditional)

Horton Barker (same...recorded by Sandy Paton)

Judy Henske (married to Craig Doerge..great pianist) (Whiskey Hill Singers)

Jesse Fuller (African-American traditional folk singer from San Francisco)

K.C. Douglas (blues musician from S.F. area)

(I was privileged to cross paths with most of the aforementioned folks)

Frank